Plaster-receiving board



March 4 1924. 1 H. A. CUMFER PLASTER RECEIVING BOARD Filed Jan. y23.1922 4 AV" @XX Patented Mar. 4, 1924.

UNITED STATES PATENT OFFICE.

BARRY A. CUMFER, F CHICAGO, ILLINOIS, ASSIGNOR 'OF ONE-HALF TO ALBERT.D. STEWART, 0F HUTCHINSDN, KANSAS.

PLAS'IERfRECEIVING BOARD.

Application led January 23, 1922. Serial No. 531,086.

To all whom t mag/concern:

Be it known that I, HARRY A. CUMFER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Plaster-ReceivingBoards, of which the following is a specification'.

This invention relates to plaster-receiving boards.

One of the objects of this invention is to provide a plaster-receivingboard which will produce an yimperforate wall thru which moisture cannotpenetrate and thru which the plaster, to 'be applied thereto, does notextend. l

Another object is to provide a plasterreceiving board having a series ofsegregated enclosed pockets, bound by a backing wall of waterproofmaterial and thereby made impervious to moisture.

Another object is, generally, to improve structures of this character.

Other objects and advantages of the invention will become readilyapparent, to persons skilled in the art, from a considera'- tion of thefollowing description when taken in conjunction with the drawings,wherein Fig. 1 is aplan view of the plastered surface showing partsbroken away.

Fig. 2 is an enlarged section taken on line 2--2 of Fig. 1.

In both views the same reference characters are employed to indicatesimilar parts.

The structure is made of three substantially parallel sheets properlysecured together.

The back sheet is moisture and water re.- sistant and imperforate. Theintermediate sheet has a series of regularly spaced-apartperforationsand the front sheet has a similar number of registeringperforations of smaller diameter, or area.

The plaster passes thru the smaller perforations or holes in the frontsheet and lls the holes or pockets in the second sheet thereby formingbuttons which, when the plaster becomes hardened, cannot pass out thruthe smaller holes in the front sheet and thus the plaster is keyed andheld to the board.

The rear 'board 5 is preferably waterproofand moisture resistant innature. It may be a sheet of asphaltic roofing material, properlysaturated with asphalt, or .the like. The inner or intermediate sheet 6may be of any sort of material to provide means to space apart the rearand frontl sheets. The intermediate sheet is provided with a series .ofperforations or holes 7 which may be round, or other suitableconfiguration, and intermediate the holes 7 are a series of partsS-which support the' superimposed sheet 9. The latter sheet is providedwith a series of registering perforations 10 which are smaller in areathan the perforations 7 in the sheet 6. Preferably the marginal edgesofthe perforations 10 are turned outwardly, as at 11, to afford a largerpocket 12 between the sheets 9 and 13. The sheet 9 may -be made ofsuitable material, such as felt or other fiber saturated and coated withasphalt or the like, preferably hardened, so as to become physicallyresistant in order to more securely hold the plaster. The rear sheet 13is preferably roofing material having a fibrous or pervious foundationsheet, such as felt or .the like, suitably saturated with asphalt orother moisture resistant material, so as to entirely and completelyrevent moisture or wind from passing t ru the wall. The three sheets, 6,9 and 13, are suitably secured together, preferably by the adhesivequalities of the material of which they may, preferably, be coated, suchbe secured rby other means of a more mechanic-al nature, such asriveting or by other suitable fastening devices.

In the application of the plaster-receiving board to a Wall or floorstructure 14, nails 15 are driven thru the parts 8, intermediate thepockets 12. When the sheet has been properly secured, in the mannerdescribed,l

to a suitable support then the plaster 16 is applied to the sheet,whereupon it will enter the pockets 12, as shown, and thus secure theplaster, wheh sufficiently hardened to the Wall or floor by 'a series ofintegral buttons uniformly spaced apart and projecting from the innerside of the plaster lof the wall.

The nails 15 pass thru all of the sheets, thereby reenforcing the cementwhen the -as asphalt, or the, like, although they may board is appliedto the wall in holding the Y sheets together.

The plaster-receiving board is especially ada table for use Yforapplication to walls of uildings `which are to subsequently receive acoat of stucco, because the stuccosupporting means Yis not subjected todry rot as wood laths, nor to rust, as metallic lathing. It isstorm-proof and prevents the. entrance of moisture or strong wind intothe building. e -Having described my invention what I claim as new anddesire to secure by Let-ters Patent; is Y 1. AffplasterV receiving'board comprising two spaced parallel flat sheets and an inter- 16mediatefiat sheet, the latter sheet perforated at uniformi intervals andhaving all of its remainingsurfacesY glued to the respective outsidesheets, one/of the outside sheets having registering perforations ofsmaller 20 diameter.V

12. A plaster-receiving board compising three parallel substantiallyflat sheets cemented together, the intermediate sheet and one of theouter sheets having registering 26 perforations, the perforations of theintermediate sheet, each, being larger in area than those in the outersheet and the outer sheets separated a distance equal te thethickness'of the inner sheet.

3. A plaster-receivin boardgcomprising three parallel substantmlly flatsheets sesured together in Ewhich one sheet is imperforate and moistureresistant, the other two sheets having registering perforations in whichthe perforations in the outer sheet are smaller than those of tile innersheet and in xvhich the inner sheet serves as a means for spacing thetwo outer sheets apart a distance equal to its thickness.

4. A plaster-receiving board comprising 40 an imperforate moistureresisting sheet for direct contact with a support; a superimposedVsubstantially flat sheet having plasterreceiving openings and anothersubstantially fiat sheet to receive the plaster and having'registeringopenings of smaller area in which the marginal'edges Hare outwardly andmeans to secure the sheets together the inner sheet separating the outersheets a distance equal to its thickness.

In testimony whereof I hereunto subscribed xiy name.

,HARRY A. CUMFER

